Just some reminders to myself, the STS#0 template is the blank template. So if you get the “you cannot import because of STS#0 and STS#1 templates do not match”, you have to delete/create your Site Collection again but this time choose the blank template instead of the team site (which I assume is STS#1).

 

Also when doing an import, if you run into the “failed to read package” error that's likely because you don't have enough disk space on drive C even if you're importing cabs located on a different drive.